Imagist haiku — 'White feather, iron rails'

english slug: english_imagist_haiku seed: 4242 validator: review

Prompt

Three-line English haiku, imagist constraint (concrete sensory specificity).

Constraint. imagism: at least one concrete sensory noun per line; no abstractions in line 1.

Style. imagist

Cascade trace

① stage 1 Cit · perceive
② stage 2 Ānanda · novelty pulse
③ stage 3 Icchā · best-of-K K_effective = 4
④ stage 4 Apohana · negation
⑤ stage 5 Jñāna · select
⑥ stage 6 Kriyā · render draft 79 chars
⑦ stage 7 Vimarśa · reflect event=false · policy=event_gated
⑧ stage 8 Revision · commit committed: draft

Validator

chandas=— · syllables=— · ok=undefined

Draft (kriyā)

score = 0.635

White feather lies still
Caught between the iron rails
Trembling as trains pass

Shadow revision (vimarśa)

score = 0.592

White feather lies still
Caught between the iron rails
Sings when trains pass through

Committed surface (draft)

Δscore = -0.043

White feather lies still
Caught between the iron rails
Trembling as trains pass

Draft vs revised

Draft (kriyā)


        
      unchanged line: White feather lies still
    
        
      unchanged line: Caught between the iron rails
    
      ~ 
      changed line: Trembling as trains pass

Shadow revision (vimarśa)


        
      unchanged line: White feather lies still
    
        
      unchanged line: Caught between the iron rails
    
      ~ 
      changed line: Sings when trains pass through

Highest-composite Phase 7 cascade output for poetry_gen (composite ≈ 0.635). Honest reading: the vimarśa event did NOT fire on this item, so the cascade committed the draft. The shadow-revision pass produced 'Sings when trains pass through' — slightly different image but the proxy scorer rates it 0.59 vs the draft's 0.64, so the event-gate's decision to keep the draft was *correct* by the scorer. This is an example of the gate working as designed.